State parks are always a fun way to spend recreational time, whether you stay in a lodge, a campground or simply take a day trip. Depending on the park, you can hike, canoe, fish or picnic in a beautiful natural setting. It’s also fun to check out features that set one park apart from another. Last summer, during a trip to north central Iowa, our travel group visited the 700-acre Pilot Knob State Park. One of Iowa’s oldest state parks, established in 1923, Pilot Knob State Park has a couple of unique features.